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Finding the Fourth Proportional to 158,613.70, 218,772.15 and 134,702.50

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Solution

The fourth proportional to 158,613.70, 218,772.15 and 134,702.50 is: 185,791.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,613.70 : 218,772.15 = 134,702.50 : x
  2. Step 2: Convert to fraction form
    158,613.70/218,772.15 = 134,702.50/x
  3. Step 3: Cross multiply
    158,613.70x = 218,772.15 × 134,702.50
  4. Step 4: Simplify right side
    158,613.70x = 29,469,155,535.38
  5. Step 5: Solve for x
    x = 29,469,155,535.38/158,613.70
  6. Step 6: Final answer
    x = 185,791.99

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.